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Ees 310 Question Paper

Ees 310 

Course:Principles Of Geochemistry

Institution: University Of Eldoret question papers

Exam Year:2012



Answer all questions
1.a)Describe the chemical composition of the earth (5marks)
b)Describe the role of volcanoes in the chemical cycle of atmosphere (5marks)
2a)What is a rock?(2marks)
b)Describe briefly how each of the following rocks are formed:
i)Igneous rocks (4marks)
ii)Sedimentary rocks (4marks)
3a)Explain briefly the role of water in the earth''s chemical cycle (5marks)
b)With reference to the rock cycle,explain what happens at a subduction zone (5marks)
4.a)Distinguish between stable and radiogenic isotopes (2marks)
b)State the applications of each of the following
i)Lead-lead isotope geochemistry (2marks)
ii)Carbon isotope ratios (4marks)
5.With reference to nitrogen cycle ,describe briefly following
a)Nitrification (5marks)
b)Human influence on the nitrogen cycle (5marks)
6.a)What is X-ray fluorescence?(2marks)
b)Describe the physics/theory of Xray fluorescence(8marks)






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